Boiler-tube brush



J. BERGESEN, SR.

BOILER TUBE BRUSH.

APPLICATION map MAY 13. 1921.

1 ,392, 1 Patented Sept. 27, 1921.

l l a WITNESSES 7 INVENTOR JOH/V Bf/PGESE/V ,J/fi

UNITED STATES PATENT OFFICE.

JOHN BERGESEN, SR., OF BROOKLYN, N EW YORK, ASSIGNOR OF ONE-HALF TO JUNIUS BERGESEN, OF BROOKLYN, NEW

YORK.

BOILER-TUBE BRUSH.

Specification of Letters Patent.

Patented Sept. 27, 1921.

Application filed May 13, 1921. Serial No. 469,231.

T all wit-0m. it may concern:

Be it known thatI, JOHN BERGESEN, Sn, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Boiler-Tube Brush, of which the following is a full, clear, and exact description.

This invention relates to boiler tube brushes, and has particular reference to a new and improved type of brush whlch is adapted to be forced, in a well-known mannor, by means of any suitable fluid pressure, through the tubes of a. boiler to clean the same.

An object of the invention resides in the provision of means whereby the brush in being forced through the tubes Wlll not cant 0r jam in the tubes. Another object resides in the provision of means whereby the bristles of the brush are very simply and effectively clamped on to the body portion of the brush.

A further object resides in the provis on of means whereby the means for clamplng the bristles on the body portion of the brush can be very easily removed to repair or replace the bristles.-

A still further object resides in the provision of means whereby a suitable washer or other flat packing means may be attached to the body portion of. the brush so as to make its passage through the tube effective.

Another object resides in the particular construction and arrangement of parts which are hereinafter described and claimed and shown in the accompanying drawings.

The invention is illustrated in the drawings, of which I Figure 1 is a side elevation of one form of brush;

Fig. 2 is a transverse vertical-section taken on the line 22 of Fig. 1;

Fig. 3 is a vertical longitudinal section therethrougl'i taken on the line 3 3 of Fig.

Fig. 4 is a side elevation of a modified form of brush;

Fig. 5 is a transverse vertical section taken on the line 5-5 of Fig. 4:

Fig. 6 is a vertical longitudinal section taken on the line 66 of Fig. 5;

Fig. 7 is a side elevation of a still further modified form of brush,

Fig. 8 is a vertical longitudinal section taken on the line 8-8 of Fig. 9; and

Fig. 9 is a transverse vertical section taken on the line 9-9 of Fig. 7.

As shown in the drawings, with particular reference to Figs. 1, 2 and 3, one ofthe preferred forms of the invention comprises a hollow shell 1, preferably in the form of a cylinder, which forms the body portion of the brush. To the ends of this shell aper- -tured plates 2 and 3 are attached in any suitablemanner. The outer portion 1 is provided with pairs of apertures such as 4 (see F ig. 2) which are disposed at intervals around the shell and along its length in any desired manner. Through these apertures 4 there extend a plurality of groups or bunches of bristles, preferably made of wire. These bunches are designated by the numeral 5. The ends of these bunches extend outwardly in any desired direction, as shown. The. middle portion, such as 6, of each group or bunch lies within adjacent the inner wallsot the shell 1. In order to clamp or retain the bristles within the shell 1, I provide .an inner clamping sleeve or shell 7. This clamping sleeve is of a diameter sutlicient to permit it to be forced within the body shell 1, and when so forced within the body portion 1 will cause the center portion (5 of each group of bristles to be clamped or gripped between the inner shell and the body portion, as shown in Fig. 2. The ends of the inner or clamping shell 7 can be turned up. as shown at 8, at each end to engage with the plates 2 and 3. This turned-up portion of the inner shell may also afford means for holding the plates 2 and I on the body portion. it is. therefore, desirable that the bristles be passed through the apertures in the bod portion. as shown inthe figures. when the inner shell is not in place. This permits the bristles to be easily inserted in place. The inner shell is then placed in position to clamp the bristles very effectively. The ends of the inner shell are shell or body turned up to lock it in place. To remove the inner shell it is merely necessary to straighten out the turned-up end portions and pull out the shell, whereupon any group or body of the groups of bristles may be repaired or replaced very easily.

Attached to one end of the body portion 1 adjacent one of the plates, such as 2, is a cuplike washer 9 of any suitable material. This is of larger diameter than the body portion and is provided to fill the cross section of the tube which this brush is adapted to clean so that the fluid back of the brush will not leak past. This washer has a central aperture 10 therein through which a resilient key such as 11 is passed. A washer 12 bearing against the aperture and around the key 11 is adapted to substantially close the aperture 10 to prevent the leakage of fluid thereby. This key 11 is split into two portions, such as 12 and 13, which at their opposite ends are bent up as at 1 1 and 15 and because of this bending latchingly engage with the ends of the inner sleeve 7 to latch the washer 9 with respect to the body portion 1. To remove the washer it is merely necessary to grasp the end of the key 11 and pull on the same, whereby the resiliency of the key will permit it to be withdrawn.

In Figs. 1, 2 and 3 it will be noticed that the bristles 5 extend from one side of the body portion to approximately the opposite side in closely disposed groups.

In Figs. 4, 5 and 6 a modified form of brush is shown which in substantially all respects is similar to the brush shown in Figs. 1, 2 and 3 but in which the bristles are not so closely packed and in which the body portion 1 isprovided with a plurality of rather lengthy slots such as 16. The bristles enter into one end of these slots and are curved around and pass out at the other end of the same slot. The central portions of these bristles are held within the slots by the intermediary of a plurality of longitudinally extending wires such as 17. These wires extend between the central portion of the bristles and the inner face of the body portion 1 across the opening of the slot 16. An inner sleeve 7, similar to the one previously described with respect to Figs. 1, 2 and 3, is then inserted to clamp the bristles in place. In other respects, this modified form of brush shown in Figs 4 and 5 is the same as the brush previously described.

In Figs. 7 8 and 9 a still further modified form of brush is shown in which the bristles extend through the body portion on one side through rather elongated slots, and out of the opposite side through similarly elongated slots. These bristles are arranged rather uniformly and not in compactmasses. Instead of having an inner sleeve, such as the sleeves 7 previously described, this form is adapted to be used with a bolt 18 which has a flared head 19 engaging the plate 3 and provided with a nut 20 on the other end which is adapted to bear against the washer 9. This plate acts as a means to clamp the central portion of the bristles in place within the body portion 1 and, at the same time, to hold the uasher 9 on the outer face of the plate 2. This bolt is also provided intermediate its ends with a flared portion 18 which is produced by riveting this portion of the bolt over the washer to hold it in place. The nut 20, therefore, merely tends to hold the washer 9 against the head or washer of plate 2 of the brush.

It will, therefore, be apparent that I have provided a body portion in which the length bears a substantial ratio to the diameter of the brush. This ratio will cause the brush to pass through the tube without canting or jamming. Short brushes have by reason of their short length been liable to tilt or cant in the tube and jam therein.

It will, furthermore, be apparent that I have provided a simple, compact and strong brush structure which can be readily assembled and disassembled and which is economical to manufacture.

What I claim is:

1. A boiler tube brush which comprises a hollow cylindrical body portion having a plurality of apertures in its surface, an apertured plate disposed at each end of the body portion, a plurality of bristles extending in different directions from the body portion and passing through the apertures, and means extending through and within the body portion to clamp the bristles between itself and the inner surface of the body portion, said clamping means at its ends passing through and engaging the outer surface of said plates to hold the plates in proper relation with respect to the body portion.

2. A boiler tube brush which comprises a hollow cylindrical body portion having a plurality of apertures in its surface, a plurality of brush bristles extending into one aperture through the body portion and out through another aperture, a hollow sleeve extending into and through the body portion and adapted to clamp the bristles between its outer surface and the inner surface of the body portion, and an apertured plate at each end of the body portion, the apertures in each plate adapted to receive the ends of the clamping sleeve, the ends of the clamping sleeve being bent outwardly to engage the plates and hold them on the body portion.

3. A boiler tube brush which comprises a hollow cylindrical body portion having a plurality of apertures in its surface, a plurality of brush bristles extending into one aperture through the body portion and out through another aperture, a hollow sleeve extending into and through the body portion and adapted to clamp the bristles be tween its outer surface and the inner surface of the body portion, an apertured plate at each end of the body portion, the apertures in each plate adapted to receive the ends of the clamping sleeve, the ends of the clamping sleeve being bent outwardly to engage the plates and hold them on the body portion, a washer disposed adjacent one of said aperture therein, and 10 end plates having an a resilient key extending through the aperture and through the clamping sleeve, the ends of the key being bent up to latchingly engage with the body portion to hold the washer in place.

JOHN BERGESEN, SR. 

